noun
Philosophical term referring to the doctrine that pleasure is the highest good. Used in academic or intellectual contexts.
快楽説は古代ギリシャの哲学に由来する。
Hedonism originates from ancient Greek philosophy.
快楽主義 is a more common term for hedonism as a lifestyle or ethical stance, while 快楽説 is specifically a philosophical doctrine.
Compound of 快楽 (pleasure) and 説 (theory, doctrine). The exact historical derivation is uncertain; the term is a Sino-Japanese coinage for the Western philosophical concept.